Advanced
GNU/Linux
Command Line
By:
- Mohammed El-Sayed

Flashback!
File system hierarchy.
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File system navigation.
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File and directory management.
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Getting help and information.
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Now, let's talk about:
Relative/Absolute paths.
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Finding stuff.
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Basic Permissions.
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Mounting partitions..and more..
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Compressing and Extracting files.
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Piping and Redirection.
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Filters.
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Relative and Absolute Paths:
A relative path, starts from your working
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directory.
Let's meet “.” and “..”
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An absolute path, starts form the Root.
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Finding Stuff:
which: shows the full path of (shell) commands.
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whereis: locate the binary, source, and manual
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page files for a command.
locate/updatedb: find files on your system quickly,
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but...
find: find files, period!
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Basic Permissions:
Users...
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System users.
–
Normal users.
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Groups....
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System groups.
–
Um, just groups?
–
chown : change ownership of a file.
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Basic Permissions, cont'd:
r : read :4
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w : write : 2
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x : execute : 1
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chmod: change permissions of a file.
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Mounting Partitions:
mount: mount a file system.
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umount: unmount file systems.
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ISO's ? disk images ? USB devices ?
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Compress/Extract Files:
gzip : compress.
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gunzip : extract.
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bzip2 : compress.
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bunzip2 : extract.
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tar : does it all.
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Redirection First:
stdin / 0
process
program stdout / 1
command
stderr / 2

Now, lets put in some pipes:
Command1 Command2 Command3

Filters:
sort
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uniq
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grep
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head
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tail
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●
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and the list goes on....
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Questions?

I get to ask questions, too!
Where do you wanna go next?

Thank You,,
EGLUG Team
http://eglug.org